Monetary policy uncertainty and inflation: the role of central bank accountability

Abstract

We analyse the issue of central bank accountability with the aid of a simple monetary policy game with uncertainty about the agent's inflation stabilisation preferences. We find that there may be an important economic role for accountability in addition to its political function of making the central bank answerable to voters through its accountability to the executive. The model suggests that for countries with relatively little central bank independence, or perhaps a poor inflationary track record, significant reductions in inflation can be achieved by lowering monetary policy uncertainty. These reductions are much smaller for inflation-averse central banks, when monetary policy uncertainty is reduced by the same absolute amount. Thus, the effectiveness of accountability – as a means of lowering both inflation and inflation uncertainty – is higher the lower the degree of central bank conservativeness.